Republican John McCain quickly denounced the comments of a radio talk show host who while warming up a campaign crowd referred repeatedly to Barack Hussein Obama and called the Democratic presidential candidate a "hack, Chicago-style" politician.

Hussein is Obama's middle name, but talk show host Bill Cunningham used it three times as he addressed the crowd before the likely Republican nominee's appearance.

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Asked whether the use of Obama's middle name — the same as former Iraqi leader Saddam Hussein — is proper, McCain said: "No, it is not. Any comment that is disparaging of either Senator Clinton or Senator Obama is totally inappropriate."